Nyob ntawm lub hnub nyoog ntawm koj Mac, nws muaj me me ntawm lub cim xeeb tshwj xeeb hu ua NVRAM (Non-Volatile RAM) lossis PRAM (Parameter RAM). Ob lub khw muag khoom siv los ntawm koj Mac los tswj kev teeb tsa ntawm ntau lub tshuab thiab khoom siv.
Qhov sib txawv ntawm NVRAM thiab PRAM feem ntau yog superficial. Cov laus PRAM siv lub roj teeb me me los ua kom lub zog RAM nce txhua lub sijhawm, txawm tias thaum lub Mac raug txiav tawm ntawm lub zog. Qhov tshiab NVRAM siv hom RAM zoo ib yam li flash-based cia siv hauv SSDs khaws cov ntaub ntawv tsis tas yuav tsum muaj roj teeb kom nws nyab xeeb.
Ib sab ntawm hom RAM siv, thiab hloov lub npe, ob leeg ua haujlwm tib yam ntawm kev khaws cov ntaub ntawv tseem ceeb uas koj xav tau thaum nws khau raj lossis nkag mus rau ntau yam kev pabcuam.
Dab tsi khaws cia hauv NVRAM lossis PRAM?
Cov neeg siv Mac feem ntau tsis xav ntau txog lawv lub Mac qhov ntsuas RAM, tab sis nws ua haujlwm nyuaj, ua raws cov hauv qab no:
- Startup volume
- hais lus ntim
- Display nqis (kev daws teeb meem, xim qhov tob, tus nqi refresh, tus naj npawb ntawm cov lus qhia)
- Kernel panics information
- DVD region settings
- Hnub thiab sijhawm, suav nrog lub sijhawm
- Computer name
- Backlight theem
- Keyboard lus
- qhov chaw pabcuam xeev (ua haujlwm lossis xiam oob qhab)
Thaum koj Mac pib, nws tshawb xyuas qhov ntsuas RAM kom pom lub ntim twg rau khau raj los ntawm thiab yuav teeb tsa lwm qhov tseem ceeb li cas.
Qee zaus, cov ntaub ntawv khaws cia hauv qhov ntsuas RAM tsis zoo, uas tuaj yeem ua rau muaj ntau yam teeb meem nrog koj Mac, suav nrog cov teeb meem hauv qab no:
- Hnub tim, sijhawm, lossis sijhawm thaj chaw.
- Tus hais lus ntim tau nrov dhau los yog mos dhau.
- Display teeb meem. Qee zaum koj yuav pom grey Apple khau raj screen thiab tom qab ntawd cov zaub yuav ploj mus. Lwm lub sij hawm koj yuav pom cov lus hais tias qhov kev daws teeb meem lossis tus nqi refresh yog tawm ntawm qhov ntau.
- Wrong startup volume.
- Ib nqe lus nug (?) thaum pib, ua raws li kev ncua ntev ua ntej koj Mac pib.
Parameter RAM ua li cas phem?
Luckily, Parameter RAM tsis ua rau qhov phem; nws tsuas yog cov ntaub ntawv nws muaj uas yuav ua tsis ncaj. Muaj ntau txoj hauv kev no tuaj yeem tshwm sim. Ib qho laj thawj feem ntau yog lub roj teeb tuag lossis tuag hauv cov Macs uas siv PRAM, uas yog lub roj teeb me me hauv lub Mac. Lwm qhov laj thawj yog koj lub Mac khov lossis poob lub zog ib ntus hauv nruab nrab ntawm kev hloov kho software.
Tej yam tseem tuaj yeem ua tsis zoo thaum koj hloov kho koj Mac nrog cov khoom siv tshiab, ntxiv lub cim xeeb, nruab ib daim npav tshiab, lossis hloov pauv qhov pib ntim. Tag nrho cov haujlwm no tuaj yeem sau cov ntaub ntawv tshiab rau qhov ntsuas RAM. Kev sau cov ntaub ntawv rau qhov parameter RAM tsis yog qhov teeb meem ntawm nws tus kheej, tab sis nws tuaj yeem yog qhov teeb meem thaum koj hloov ntau yam khoom ntawm koj Mac. Piv txwv li, yog tias koj nruab RAM tshiab thiab tom qab ntawd tshem tawm RAM stick vim nws tsis zoo, qhov ntsuas RAM yuav khaws cov cim xeeb tsis raug. Ib yam li ntawd, yog tias koj xaiv lub ntim pib thiab tom qab ntawd lub cev tshem tawm qhov tsav ntawd, qhov ntsuas RAM yuav khaws cov ntaub ntawv ntim pib tsis raug.
Resetting Parameter RAM
Ib qho yooj yim kho rau ntau yam teeb meem yog kom rov pib dua qhov ntsuas RAM rau nws lub xeev qub. Qhov no yuav ua rau qee cov ntaub ntawv ploj, tshwj xeeb yog hnub tim, lub sijhawm, thiab qhov pib ntim xaiv. Luckily, koj tuaj yeem kho cov teeb tsa no yooj yim siv koj Mac's System Preferences.
Cov kauj ruam yuav tsum tau rov pib dua qhov parameter RAM yog tib yam, tsis hais seb koj Mac siv NVRAM lossis PRAM.
- Kaw koj Mac.
- Tig koj Mac rov qab rau.
- Tam sim ntawd nias thiab tuav cov yuam sij hauv qab no: command+ option+ P+ R Qhov ntawd yog plaub tus yuam sij: tus yuam sij hais kom ua, tus yuam sij xaiv, tsab ntawv P, thiab tsab ntawv R. Koj yuav tsum nias thiab tuav plaub tus yuam sij no ua ntej koj pom lub vijtsam grey thaum lub sijhawm pib.
- Txuas ntxiv tuav plaub tus yuam sij. Qhov no yog txheej txheem ntev, thaum lub sijhawm koj Mac yuav rov pib dua ntawm nws tus kheej.
- Thaum kawg, thaum koj hnov lub suab nrov pib thib ob, koj tuaj yeem tso tus yuam sij.
- Koj Mac yuav ua tiav cov txheej txheem pib.
Resetting NVRAM thaum lig 2016 MacBook Pros thiab Tom qab
MacBook Pro qauv qhia thaum lig 2016 muaj cov txheej txheem sib txawv me ntsis rau kev rov pib dua NVRAM rau nws qhov tseem ceeb. Thaum koj tseem tuav plaub tus yuam sij li niaj zaus, koj tsis tas yuav tos kom rov pib dua zaum ob lossis ua tib zoo mloog cov chimes pib.
- Kaw koj Mac.
- Tig koj Mac rau.
- Tam sim ntawd nias thiab tuav lub command+ option+ P+ R tus yuam sij.
- Txuas ntxiv command + option+ P+ R tus yuam sij rau yam tsawg kawg ntawm 20 vib nas this; ntev yog zoo tab sis tsis tsim nyog.
- Tom qab 20 vib nas this, koj tuaj yeem tso tus yuam sij.
- Koj Mac yuav txuas ntxiv cov txheej txheem pib.
Lwm txoj kev los rov pib dua NVRAM
Muaj lwm txoj hauv kev rau rov pib dua NVRAM ntawm koj Mac. Txhawm rau siv txoj kev no koj yuav tsum muaj peev xwm khau raj koj Mac thiab nkag mus. Thaum lub desktop tshwm sim ua cov hauv qab no:
- Launch Terminal, nyob ntawm /Applications/Utilities.
-
Nyob rau hauv Terminal qhov rai uas qhib nkag mus rau hauv qab no ntawm Terminal kom sai:
nvram -c
- Cia li ntaus return lossis enter ntawm koj cov keyboard.
- Qhov no yuav ua rau NVRAM tshem tawm thiab rov pib dua rau lub xeev qub.
- Txhawm rau ua kom tiav cov txheej txheem rov pib dua, koj yuav tsum rov pib koj Mac.
Tom qab rov pib dua PRAM lossis NVRAM
Thaum koj lub Mac pib ua tiav, koj tuaj yeem siv qhov Kev Xaiv Qhov System los teeb tsa lub sijhawm, teeb tsa hnub thiab sijhawm, xaiv lub ntim pib, thiab teeb tsa cov kev xaiv zaub uas koj xav siv.
Yuav ua li no, nyem qhov System Preferences icon hauv Dock. Hauv seem System ntawm qhov System nyiam, nyem lub Hnub & Sijhawm icon txhawm rau teeb tsa lub sijhawm, hnub tim, thiab sijhawm, thiab nyem rau Startup Diskicon xaiv lub disk pib. Txhawm rau teeb tsa cov kev xaiv zaub, nyem qhov Displays icon nyob rau hauv ntu Hardware ntawm qhov System nyiam qhov rais.
Tseem muaj teeb meem? Sim rov pib dua SMC lossis khiav Apple Hardware Test.
